Annotation of sys/dev/mii/ukphy_subr.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ukphy_subr.c,v 1.7 2006/12/27 19:11:09 kettenis Exp $ */
2: /* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */
3:
4: /*-
5: * Copyright (c) 1998 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10: * NASA Ames Research Center, and by Frank van der Linden.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the NetBSD
23: * Foundation, Inc. and its contributors.
24: * 4. Neither the name of The NetBSD Foundation nor the names of its
25: * contributors may be used to endorse or promote products derived
26: * from this software without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38: * POSSIBILITY OF SUCH DAMAGE.
39: */
40:
41: /*
42: * Subroutines shared by the ukphy driver and other PHY drivers.
43: */
44:
45: #include <sys/param.h>
46: #include <sys/systm.h>
47: #include <sys/kernel.h>
48: #include <sys/device.h>
49: #include <sys/socket.h>
50:
51: #include <net/if.h>
52: #include <net/if_media.h>
53:
54: #include <dev/mii/mii.h>
55: #include <dev/mii/miivar.h>
56:
57: /*
58: * Media status subroutine. If a PHY driver does media detection simply
59: * by decoding the NWay autonegotiation, use this routine.
60: */
61: void
62: ukphy_status(struct mii_softc *phy)
63: {
64: struct mii_data *mii = phy->mii_pdata;
65: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
66: int bmsr, bmcr, anlpar, gtcr, gtsr;
67:
68: mii->mii_media_status = IFM_AVALID;
69: mii->mii_media_active = IFM_ETHER;
70:
71: bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
72: if (bmsr & BMSR_LINK)
73: mii->mii_media_status |= IFM_ACTIVE;
74:
75: bmcr = PHY_READ(phy, MII_BMCR);
76: if (bmcr & BMCR_ISO) {
77: mii->mii_media_active |= IFM_NONE;
78: mii->mii_media_status = 0;
79: return;
80: }
81:
82: if (bmcr & BMCR_LOOP)
83: mii->mii_media_active |= IFM_LOOP;
84:
85: if (bmcr & BMCR_AUTOEN) {
86: /*
87: * NWay autonegotiation takes the highest-order common
88: * bit of the ANAR and ANLPAR (i.e. best media advertised
89: * both by us and our link partner).
90: */
91: if ((bmsr & BMSR_ACOMP) == 0) {
92: /* Erg, still trying, I guess... */
93: mii->mii_media_active |= IFM_NONE;
94: return;
95: }
96:
97: anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
98: if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
99: (phy->mii_extcapabilities &
100: (EXTSR_1000THDX|EXTSR_1000TFDX)) != 0) {
101: gtcr = PHY_READ(phy, MII_100T2CR);
102: gtsr = PHY_READ(phy, MII_100T2SR);
103: } else
104: gtcr = gtsr = 0;
105:
106: if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
107: mii->mii_media_active |= IFM_1000_T|IFM_FDX;
108: else if ((gtcr & GTCR_ADV_1000THDX) &&
109: (gtsr & GTSR_LP_1000THDX))
110: mii->mii_media_active |= IFM_1000_T|IFM_HDX;
111: else if (anlpar & ANLPAR_T4)
112: mii->mii_media_active |= IFM_100_T4|IFM_HDX;
113: else if (anlpar & ANLPAR_TX_FD)
114: mii->mii_media_active |= IFM_100_TX|IFM_FDX;
115: else if (anlpar & ANLPAR_TX)
116: mii->mii_media_active |= IFM_100_TX|IFM_HDX;
117: else if (anlpar & ANLPAR_10_FD)
118: mii->mii_media_active |= IFM_10_T|IFM_FDX;
119: else if (anlpar & ANLPAR_10)
120: mii->mii_media_active |= IFM_10_T|IFM_HDX;
121: else
122: mii->mii_media_active |= IFM_NONE;
123:
124: if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) &&
125: (gtsr & GTSR_MS_RES))
126: mii->mii_media_active |= IFM_ETH_MASTER;
127: } else
128: mii->mii_media_active = ife->ifm_media;
129: }
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